disunite vs put asunder

disunite

verb
  • To separate, sever, or split. 

  • To cause disagreement or alienation among or within. 

  • To disintegrate; to come apart. 

put asunder

verb
  • To sunder; disjoin; separate. 

How often have the words disunite and put asunder occurred in a corpus of books? (source: Google Ngram Viewer )